Shock-absorber.



E. Ei MALUNE.

SHOCK A'BSORBER.

kTION FILED JUNE i0 191 APPLlc 4. 1,154,996. Patentedspt. 28,1915.

l tween two relatively movable parts To all whom may concorre f Be it known that l, lliirus'r i3. Manon-n, a citizen of Canada, residing ttawa, in the Province of ntario, Canada, have invented certain new and useful lli'oprovements in Shock-Alisorhers, wlV en the following description, in connection with the accompanying drawing, is a specllication, like characters on the drawing" representing like parts, the principle ci? lthe invention being herein explained and the best modes olf applying that principle, so as to distinguish it from other inventions.

This invention-relates to improvements in shock absorbers adapted to be placed hcsuch as the axle and'springs or' a vehicle, and the objects of the invention are to resist movement oi the springs and particularly to offer a graduated resistance to the compression of the springs and to 'the rebound thereof.

Further objects are to produce a uniform dampening action to 'thereby reduce vibratory movement oi? the spring and to cause the resistance of the spring to increase in proportion to the violence of the shockw Further object still are to generally iinn form the "functions required of them, and it all the oy-pass titi consists essentially of the im'g'ii ved construc- 'tion of shock ahsorher hereinafter described in detail in the accompanyint,n speciication and drawingsf ln the drawings, Figure l is an elevation, partly in section, of an embodiment ol the invention. Fig. il an end view of the saine, also partly in section.

Lilie characters of reference referto like parts in the several drawings.

Referring to the drawings, A and E represent two parts movable relatively to each other, the parts illustrated being the 'upper spring and the axle of vehicle,

D and E represents a pair oil shoclr absorbing members each including-t a cylinder l0, piston il and piston rod "12 llfhe piston 11 is preferably made hollow and adapted. to house the valve l designed to civ-act with passageways lb provided in the said piston. This valve is slidahly mounted in the orifice 8 extending partially through the longitudinal axis of that end of the piston rod l2 adjacent to the 'st/on, the said valve being adaptedto allow the air to flow relatively slowlyl from one side of the piston to the other, thereby providingl a pneumatic cushioningresistance to rapid Inoveinent in either direction.

' The piston normally lies at the outer end ci' the cylinder and its resistance to movement may he increased by a spiral compres'- sion spring li which surrounds the pisf trated by il shaped bracket members F' which engage trunnions l5 on opposite sides ol the cylinder near the inner ends thereof, the lower end of the brackets being connected to the axle B.

The piston rods are in alinement and eX- tend toward each other and are adapted to have pivotal engagement with part A, which pivotal engagement is secured in the embodiment illustrated by a clamping device G- secured to the springs A by bolts 17 and having' lugs 18 to which the ends of the piston rods are pivoted.

lt will he seen that as the parts A and B are moved toward each other the cylinders will turn aooutpthe transverse axis through 'the trunnions l5 and thus the leverage through which the piston il operates-to resist the movement of the spring is autonratically increased. ln the same way, on the rebound of the spring when the pivoting' points oi the connecting rod pass the center line Vwhich connects the trunnions, then a gradual resistance will be offered to the rebound action. In normal or neutral positions there is practically no resistance oiiiered to slight movement between the springs. f

When such a device is operated with light loads ll preferably provide small orifices 19 and 20 which extend through the cylinders l0,'such orifices being located on different sides oil the pistons. is many changes could helmade in the above construction and many apparently widely dillerent embodiments of my invention, within the scope of the claims, constructed without departing 'from the spirit or scope thereof, it is intended that all against the inner end of the matter contained in the accompanying terpreted as illustrative and not in a limiting sense.

1.,v In a shock absorber' and in combination, a leaf spring, an axle, a cylinder having its axis extending transversely of the direction of movement of the parts, a bracket connected to the axle and supporting the cylinderwith freedom to swing about al transverse axis, a piston in the cylinder, a piston rod, and means pivotally connecting the piston rod with the leaf part in such a way that as the parts are moved toward each other the cylinder will be swung about its transverse axis.

2. In a shock absorber and in combination, two parts movable relatively to each other, a cylinder having its axis extending transversely of the direction of movement of the parts, resilient suspending `means, a

'bracket connected to one part and supporting the cylinder with freedom to swing v about aV transverse axis, a piston in the cylinder, a piston rod and means pivotally connecting the piston rod with the opposite part to that to which the bracketis connected in such a way that as the parts are moved .toward each other the cylinder will be swung about its transverse axis.

In testimony whereof I have hereunto set my hand in presence of two subscribing Witnesses. ERNEST E. MALONE.

Witnesses: 4 Jos. J. LEDDY, A. J. BURTON. 

